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Measurement of electrons from semileptonic heavy-flavor hadron decays in pp collisions at √s = 7 TeV
(2012)
The differential production cross section of electrons from semileptonic heavy-flavour hadron decays has been measured at mid-rapidity (|y|<0.5) in proton-proton collisions at s√=7 TeV with ALICE at the LHC. Electrons were measured in the transverse momentum range 0.5 <pT< 8 GeV/c. Predictions from a fixed order perturbative QCD calculation with next-to-leading-log resummation agree with the data within the theoretical and experimental uncertainties.
Measurement of charm production at central rapidity in proton-proton collisions at √s = 2.76 TeV
(2012)
The pT-differential production cross sections of the prompt (B feed-down subtracted) charmed mesons D0, D+, and D∗+ in the rapidity range |y|<0.5, and for transverse momentum 1<pT<12 GeV/c, were measured in proton-proton collisions at s√=2.76 TeV with the ALICE detector at the Large Hadron Collider. The analysis exploited the hadronic decays D0→Kπ, D+→Kππ, D∗+→D0π, and their charge conjugates, and was performed on a Lint=1.1 nb−1 event sample collected in 2011 with a minimum-bias trigger. The total charm production cross section at s√=2.76 TeV and at 7 TeV was evaluated by extrapolating to the full phase space the pT-differential production cross sections at s√=2.76 TeV and our previous measurements at s√=7 TeV. The results were compared to existing measurements and to perturbative-QCD calculations. The fraction of cdbar D mesons produced in a vector state was also determined.
Die Jugend der Moderne
(2007)
Das vorliegende Jahrbuch 2006 geht in seinem Schwerpunkt der Genese und markanten Ausprägungen des modernen Jugend-Konzepts in der ersten Hälfte des 19. Jahrhunderts nach. Bereits die Rede vom "Jungen Deutschland", nicht selten als Epochenbegriff für die Jahre zwischen 1830 und 1848 verwendet, enthält jene Ambivalenz, die dem Thema und seinen bisweilen diffusen Konnotationen Aufmerksamkeit sichert: Der Aufbruch zu neuen (politischen, sozialen, künstlerischen) Ufern ist angesprochen, aber nicht wenige Zeitgenossen meinen auch Infragestellung bewährter Werte und Deutungsmuster. Diese charakteristischen Mehrdeutigkeit soll zunächst skizziert werden.